<template>
  <div>
    <div class="shopcart">
      <div class="content">
        <div class="content-left">
          <div class="logo-wrapper">
            <div class="logo " :class="{highlight:totalCount}" @click="toggleisShowList">
              <i class="iconfont icon-gouwuche"
                 :class="{highlight:totalCount}">
              </i>
            </div>
            <div class="num" v-if="totalCount">{{totalCount}}</div>
          </div>
          <div class="price highlight">￥{{totalPrice}}</div>
          <div class="desc">另需配送费￥{{info.deliveryPrice}} 元</div>
        </div>
        <div class="content-right">
          <div class="pay " :class="payClass">
            {{payText}}
          </div>
        </div>
      </div>
      <transition name="fade">
          <div class="shopcart-list" v-show="listShow">
            <div class="list-header">
              <h1 class="title">购物车</h1>
              <span class="empty" @click="emptyFoods">清空</span>
            </div>
            <div class="list-content" >
              <ul>
                <li class="food" v-for="(food,index) in cartFoods" :key="index">
                  <span class="name">{{food.name}}</span>
                  <div class="price"><span>￥{{food.price}}</span></div>
                  <div class="cartcontrol-wrapper">
                    <CartControl :food="food"></CartControl>
                  </div>
                </li>
              </ul>
            </div>
          </div>

      </transition>

    </div>
    <div class="list-mask" v-show="listShow" @click="toggleisShowList"></div>
  </div>
</template>
<script>
  import {mapState, mapGetters} from 'vuex'
  import CartControl from '../CartControl/CartControl'
  import BScroll from 'better-scroll'
  import {MessageBox} from 'mint-ui'
  export default {
    data(){

      return{
        isShowList:false
      }
    },
    components: {
      CartControl
    },
    computed: {
      ...mapState(['cartFoods','info']),
      ...mapGetters(['totalCount', 'totalPrice']),

      payClass () {
        const {totalPrice} = this
        const {minPrice} = this.info
        return totalPrice > minPrice ? 'enough' : 'not-enough'

      },
      payText () {
        const {totalPrice} = this
        const {minPrice} = this.info
        if (totalPrice === 0) {
          return `￥${minPrice}起送`
        } else if (totalPrice < minPrice) {
          return `还差￥${minPrice - totalPrice}起送`
        } else {
            return '去结算'
        }
      },
      listShow(){
         if (this.totalCount===0) {//当总数量为0，就让蒙版不显示，菜单不显示
           this.isShowList=false  //
            return false
         }

         if (this.isShowList){
           this.$nextTick(()=> {

               new BScroll('.list-content')
           })
         }

         return this.isShowList//totalCount!=0,isShowList这个时候是ture,后面将减少到0，
        // 但是isShowList的值还是true,所以蒙版会显示，需要将这个置为false
      }
    },
    methods:{
      toggleisShowList(){
        if (this.totalCount>0){//只有>0，才切换状态
          this.isShowList = !this.isShowList
        }
      },
      emptyFoods(){//购物车清空
        MessageBox.confirm('确定清空购物车吗？').then(action =>{
          this.$store.dispatch('emptyFoods')
        })

      }
    },
  }
</script>
<style lang="stylus" rel="stylesheet/stylus" scoped>
  @import "../../common/stylus/mixins.styl"

  .shopcart
    position fixed
    left 0
    bottom 0
    z-index 50
    width 100%
    height 48px

    .content
      display flex
      background #141d27
      font-size 0
      color rgba(255, 255, 255, 0.4)

      .content-left
        flex 1

        .logo-wrapper
          display inline-block
          vertical-align top
          position relative
          top -10px
          margin 0 12px
          padding 6px
          width 56px
          height 56px
          box-sizing border-box
          border-radius 50%
          background #141d27

          .logo
            width 100%
            height 100%
            border-radius 50%
            text-align center
            background #2b343c

            &.highlight
              background $green

            .icon-gouwuche
              line-height 44px
              font-size 24px
              color #80858a

              &.highlight
                color #fff

          .num
            position absolute
            top 0
            right 0
            width 24px
            height 16px
            line-height 16px
            text-align center
            border-radius 16px
            font-size 9px
            font-weight 700
            color #ffffff
            background rgb(240, 20, 20)
            box-shadow 0 4px 8px 0 rgba(0, 0, 0, 0.4)

        .price
          display inline-block
          vertical-align top
          margin-top 5px
          line-height 24px
          padding-right 12px
          box-sizing border-box
          font-size 16px
          font-weight 700
          color #fff

          &.highlight
            color #fff

        .desc
          display inline-block
          vertical-align bottom
          margin-bottom 15px
          margin-left -45px
          font-size 10px

      .content-right
        flex 0 0 105px
        width 105px

        .pay
          height 48px
          line-height 48px
          text-align center
          font-size 12px
          font-weight 700
          color #fff

          &.not-enough
            background #2b333b

          &.enough
            background #00b43c
            color #fff

    .ball-container
      .ball
        position fixed
        left 32px
        bottom 22px
        z-index 200
        transition all 0.4s cubic-bezier(0.49, -0.29, 0.75, 0.41)

        .inner
          width 16px
          height 16px
          border-radius 50%
          background $green
          transition all 0.4s linear

    .shopcart-list
      position absolute
      left 0
      top 0
      z-index -1
      width 100%
      transform translateY(-100%)
      &.fade-enter-active ,&fade-leave-active
          transition  transform .5s
      &.fade-enter , &.fade-leave-to
          transform translateY(0%)
      .list-header
        height 40px
        line-height 40px
        padding 0 18px
        background #f3f5f7
        border-bottom 1px solid rgba(7, 17, 27, 0.1)

        .title
          float left
          font-size 14px
          color rgb(7, 17, 27)

        .empty
          float right
          font-size 12px
          color rgb(0, 160, 220)

      .list-content
        padding 0 18px
        max-height 217px
        overflow hidden
        background #fff

        .food
          position relative
          padding 12px 0
          box-sizing border-box
          bottom-border-1px(rgba(7, 17, 27, 0.1))

          .name
            line-height 24px
            font-size 14px
            color rgb(7, 17, 27)

          .price
            position absolute
            right 90px
            bottom 12px
            line-height 24px
            font-size 14px
            font-weight 700
            color rgb(240, 20, 20)

          .cartcontrol-wrapper
            position absolute
            right 0
            bottom 6px

  .list-mask
    position fixed
    top 0
    left 0
    width 100%
    height 100%
    z-index 40
    backdrop-filter blur(10px)
    opacity 1
    background rgba(7, 17, 27, 0.6)
</style>
